公开(公告)号：US11110912B2

公开(公告)日：2021-09-07

申请号：US16538373

申请日：2019-08-12

Applicant: SHOWA CORPORATION

Inventor： Ken Isshiki ,  Eishi Ishimaru ,  Kyouichi Tagami ,  Katsutoshi Yokoi

IPC: B60W30/02 ,  B60W10/20 ,  B60W10/22

Abstract: An embodiment of the present invention provides higher ride comfort to a driver in control of steering and suspension. An ECU (600) includes: a steering control section (610) which controls a magnitude of an assist torque or a reaction torque; and a suspension control section (650) which controls a damping force of a suspension. The steering control section (610) refers to a state of a vehicle which state is predicted by the suspension control section (650), and the suspension control section (650) refers to a steering torque.

公开(公告)号：US11247685B2

公开(公告)日：2022-02-15

申请号：US16538371

申请日：2019-08-12

Applicant: SHOWA CORPORATION

Inventor： Ken Isshiki ,  Eishi Ishimaru ,  Kyouichi Tagami ,  Katsutoshi Yokoi

IPC: B60W40/06 ,  B62D6/00 ,  B60G17/06 ,  B60G17/0165 ,  B60G17/016

Abstract: A road surface condition is determined appropriately. A road surface determining section (84) configured to determine a road surface condition with reference to a wheel speed signal indicative of wheel speeds includes a band-stop filter (841) which acts on the wheel speed signal and has a cutoff frequency band which is changed in accordance with the wheel speed signal.

公开(公告)号：US09610973B2

公开(公告)日：2017-04-04

申请号：US15078455

申请日：2016-03-23

Applicant: Showa Corporation

Inventor： Kyouichi Tagami ,  Katsutoshi Yokoi ,  Eishi Ishimaru ,  Tadayoshi Iwase

IPC: B62D5/04 ,  B62D3/12 ,  B62D6/10

CPC classification number: B62D5/046 ,  B62D3/12 ,  B62D5/0421 ,  B62D5/0472 ,  B62D6/10

Abstract: A motor-driven power steering apparatus including: a base current calculator configured to calculate a base current, which is a base for a target current, based on a detected torque detected by a torque sensor; a band-pass filter configured to allow a predetermined range of frequency components of the detected torque to the pass through the band-pass filter; a base shimmy compensation current calculator configured to calculate a base shimmy compensation current, considered a base for a shimmy compensation current required to suppress a disturbance torque, based on an extracted torque after passing through the band-pass filter; a shimmy compensation current calculator configured to calculate the shimmy compensation current by correcting the base shimmy compensation current according to magnitude of amplitude of the extracted torque; and a final target current determination unit configured to determine the target current based on the base current and the shimmy compensation current.